Revert "Bug 995807 - Jenkins builds fail on downloadable cartridges"

This reverts commit a9f5b8ba9302fb78ac60925b9f527c73071cb7fe.
Bug 1054403 - Reset empty metadata.json file

* Use defaults if file is empty
Bug 1044223
Typo fix: Method name find_available_impl changed to find_all_available_impl
Hide small app type icon in origin
Minor haml change
Reverting back to use usage_rate_indicator
Added mixin to adjust $ sign size to match related group icon size
Merge pull request #4507 from jwhonce/bug/1054403

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Merge pull request #4509 from danmcp/master

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Merge pull request #4508 from pravisankar/dev/ravi/fix-move

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Merge pull request #4501 from sg00dwin/app-type-edits-for-origin

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Merge pull request #4504 from bparees/revert_jenkins_dl

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